Gasfitter A - ITA BC · Gasfitter A Industry Training Authority 2 Foreword The revised Gasfitter A Program Outline is intended as a guide for instructors, apprentices, and employers

Gasfitter A

Gasfitter A Industry Training Authority 1

The latest version of this document is available in PDF format on the ITA website

www.itabc.ca

To order printed copies of Program Outlines or learning resources (where available) for BC trades contact:

Crown Publications, Queen’s Printer

Web: www.crownpub.bc.ca

Email: [email protected]

Toll Free 1 800 663-6105

Copyright © 2012 Industry Training Authority

This publication may not be modified in any way without permission of the Industry Training Authority

http://www.itabc.ca/


GASFITTER A

PROGRAM OUTLINE

APPROVED BY INDUSTRY

DECEMBER 2012

Developed by

Industry Training Authority

Province of British Columbia


TABLE OF CONTENTS

Section 1 INTRODUCTION ................................................................................................................ 1

Foreword ........................................................................................................................... 2 Acknowledgements ........................................................................................................... 3 How to Use this Document ................................................................................................ 4

Section 2 PROGRAM OVERVIEW .................................................................................................... 5

Program Credentialing Model ........................................................................................... 6 Occupational Analysis Chart ............................................................................................. 8 Training Topics and Suggested Time Allocation ............................................................. 10

Section 3 PROGRAM CONTENT .................................................................................................... 11

Gasfitter A - Level 1 ........................................................................................................ 12

Section 4 TRAINING PROVIDER STANDARDS ............................................................................ 42

Facility Requirements ...................................................................................................... 43 Tools and Equipment ...................................................................................................... 44 Reference Materials ........................................................................................................ 46 Instructor Requirements .................................................................................................. 47

Introduction


Section 1

INTRODUCTION

Gasfitter A

Introduction


Foreword

The revised Gasfitter A Program Outline is intended as a guide for instructors, apprentices, and employers of apprentices as well as for the use of industry organizations, regulatory bodies, and provincial and federal governments. It reflects updated standards based on British Columbia industry and instructor subject matter experts.

Practical instruction by demonstration and student participation should be integrated with classroom sessions. Safe working practices, even though not always specified in each operation or topic, are an implied part of the program and should be stressed throughout the apprenticeship.

The Program Outline includes the minimum shop requirements needed to support instructors.

The Program Outline was prepared with the advice and assistance of the Gasfitter A Review Committee and will form the basis for further updating of the British Columbia Gasfitter A Program and learning resources by the Construction Industry Training Organization (CITO) on behalf of the Industry Training Authority (ITA).

Each competency is to be evaluated through the use of written examination. The individual must achieve a minimum final grade of 70% in order to be successful in each level. The types of questions used on these exams must reflect the cognitive level indicated by the learning objectives and the learning tasks listed in the related competencies.

Achievement Criteria are included for those competencies that require a practical component. The intent of including Achievement Criteria in the program outline is to ensure consistency in training across training institutions in British Columbia. Their purpose is to reinforce the theory and to provide a mechanism for evaluation of the individual’s ability to apply the theory to practice. It is important that these performances be observable and measureable and that they reflect the skills spelled out in the competency as those required as competent journeyperson. The conditions under which these performances will be observed and measured must be clear to the individual as well as the criteria by which the individual will be evaluated. The individual must also be given the level of expectation of success.

The performance spelled out in the Achievement Criteria is a suggested performance and is not meant to stifle flexibility of delivery. Training providers are welcome to substitute other practical performances that measure skills and attainment of the competency. Multiple performances may also be used to replace individual performances where appropriate.

SAFETY ADVISORY

Be advised that references to the WorkSafeBC safety regulations contained within these materials do not/may not reflect the most recent Occupational Health and Safety Regulation (the current Standards and Regulation in BC can be obtained on the following website: http://www.worksafebc.com. Please note that it is always the responsibility of any person using these materials to inform him/herself about the Occupational Health and Safety Regulation pertaining to his/her work.

http://www.worksafebc.com/

Introduction


Acknowledgements

The Program Outline was prepared with the advice and direction of an industry steering committee convened initially by CITO. Members include:

Rob Bradbury – Pacific Vocational College

Jamie Good – Autogas Propane

Satwant Sandhu – Century 21 Gas & Heating

Gord Schlechtleipner – Fireplaces Unlimited

Brian Sweet - BCIT

Larry Wear – Canadian Utilities

Brian Zinn – BC Safety Authority

Industry Subject Matter Experts retained to assist in the development of Program Outline content:

Rick Vanier – Pacific Vocational College

Rob Bradbury – Pacific Vocational College

Brian Sweet - BCIT

Gary Eamor – BC Safety Authority

Jamie Good – Autogas Propane

Dave Sales

The Industry Training Authority would like to acknowledge the dedication and hard work of all the industry representatives appointed to identify the training requirements of the Gasfitter A occupation.

Introduction


How to Use this Document

This Program Outline has been developed for the use of individuals from several different audiences. The table below describes how each section can be used by each intended audience.

Section Training Providers Employers/ Sponsors Apprentices Challengers

Program Credentialing Model

Communicate program length and structure, and all pathways to completion

Understand the length and structure of the program

Understand the length and structure of the program, and pathway to completion

Understand challenger pathway to Certificate of Qualification

OAC Communicate the competencies that industry has defined as representing the scope of the occupation

Understand the competencies that an apprentice is expected to demonstrate in order to achieve certification

View the competencies they will achieve as a result of program completion

Understand the competencies they must demonstrate in order to challenge the program

Training Topics and Suggested Time Allocation

Shows proportionate representation of general areas of competency (GACs) at each program level, the suggested proportion of time spent on each GAC, and percentage of time spent on theory versus practical application

Understand the scope of competencies covered in the technical training, the suggested proportion of time spent on each GAC, and the percentage of that time spent on theory versus practical application

Understand the scope of competencies covered in the technical training, the suggested proportion of time spent on each GAC, and the percentage of that time spent on theory versus practical application

Understand the relative weightings of various competencies of the occupation on which assessment is based

Program Content

Defines the objectives, learning tasks, high level content that must be covered for each competency, as well as defining observable, measureable achievement criteria for objectives with a practical component

Identifies detailed program content and performance expectations for competencies with a practical component; may be used as a checklist prior to signing a recommendation for certification (RFC) for an apprentice

Provides detailed information on program content and performance expectations for demonstrating competency

Allows individual to check program content areas against their own knowledge and performance expectations against their own skill levels

Training Provider Standards

Defines the facility requirements, tools and equipment, reference materials (if any) and instructor requirements for the program

Identifies the tools and equipment an apprentice is expected to have access to; which are supplied by the training provider and which the student is expected to own

Provides information on the training facility, tools and equipment provided by the school and the student, reference materials they may be expected to acquire, and minimum qualification levels of program instructors

Identifies the tools and equipment a tradesperson is expected to be competent in using or operating; which may be used or provided in a practical assessment

Program Overview


Section 2

PROGRAM OVERVIEW

Gasfitter A

Program Overview


Program Credentialing Model

Apprenticeship Pathway

This graphic provides an overview of the Gasfitter A apprenticeship pathway.

C of Q = Certificate of Qualification C of A = Certificate of Apprenticeship WBT = Work-Based Training

None

CROSS-PROGRAM CREDITS Individuals who hold the credentials listed below are entitled to receive partial credit toward the completion requirements of this program

*Suggested duration based on 30-hour week

BCSA C of Q

Gasfitter Class A

ITA C of A

Gasfitter Class A

Gasfitter Class A Meet British Columbia Safety Authority (BCSA)

Requirements Including: BCSA Certificate of Qualification Examination

A pass certificate from an approved course and,

All conditions detailed in Division 2 of the Gas Safety Regulation

For further details please visit www.safetyauthority.ca

APPRENTICESHIP - DIRECT ENTRY

Gasfitter Class A Level 1 Technical Training: 240 hours (8 weeks*) Work-Based Training: 3,600 hours total

RECOMMENDATION FOR CERTIFICATION

BCSA C of Q

Domestic / Commercial

Gasfitter Class B

ITA C of A

Domestic / Commercial

Gasfitter Class B

Domestic / Commercial Gasfitter Class B Meet British Columbia Safety Authority (BCSA)

Requirements Including: BCSA Certificate of Qualification Examination

A pass certificate from an approved course and,

All conditions detailed in Division 2 of the Gas Safety Regulation

For further details please visit www.safetyauthority.ca

APPRENTICESHIP - DIRECT ENTRY

Domestic / Commercial Gasfitter Class B Level 1 Technical Training: 180 hours (6 weeks*) Work-Based Training: Accumulate hours

BCSA Standardized Level Examination

Domestic / Commercial Gasfitter Class B Level 2 Technical Training: 180 hours (6 weeks*) Work-Based Training: 3,600 hours total

RECOMMENDATION FOR CERTIFICATION

http://www.safetyauthority.ca/


Program Overview


Challenge Pathway

Refer to the British Columbia Safety Authority (BCSA) web site – www.safetyauthority.ca for information

on the requirements for the completion of the Certificate of Qualification for (Class A) Gasfitter.


Program Overview


Occupational Analysis Chart

Gasfitter A

Occupation Description: “Gasfitter – (Class A)” means a person who installs, tests, maintains and repairs propane and/or natural gas lines, appliances, equipment and accessories in residential and commercial premises. The holder of a Gasfitter – (Class A) is involved in the installation or alteration of any gas system, except vehicle fuel systems, under an appropriate permit.

USE TOOLS AND EQUIPMENT B

Use Pressure Measuring Equipment B4

1

ORGANIZE WORK C

Use Mathematics and Science C1

Use Codes, Regulations and Standards C3

1 1

INSTALL AND SERVICE FUEL SYSTEMS D

Install Piping and Tubing Systems D2

Use Meters D3

Install and Service Regulators D4

Install and Service Propane Systems D5

1 1 1 1

INSTALL VENTING AND AIR SUPPLY E

Install Venting Systems E1

Install Air Supply Systems E2

1 1

Program Overview


INSTALL AND SERVICE GAS EQUIPMENT F

Install and Service Burners F1

Install and Service Appliances F2

Perform Combustion Analysis F3

Describe Heating and Cooling Systems F4

1 1 1 1

INSTALL AND SERVICE CONTROLS AND SAFEGUARDS G

Use the Principles of Electricity and Electronics G1

Use the Principles of Gas Controls G2

Install and Service Gas Controls G3

Install and Service Fuel Train Systems G4

1 1 1 1

Program Overview


Training Topics and Suggested Time Allocation

Gasfitter A

% of Time Allocated to:

% of Time Theory Practical Total

Line B Use Tools and Equipment 2% 100% 0% 100%

B4 Use Pressure Measuring Equipment 100

Line C Organize Work 8% 98% 2% 100% C1 Use Mathematics and Science 80

C3 Use Codes, Regulations and Standards 20

Line D Install and Service Fuel Systems 17% 90% 10% 100%

D2 Install Piping and Tubing Systems 35

D3 Use Meters 5

D4 Install and Service Regulators 40

D5 Install and Service Propane Systems 20

Line E Install Venting and Air Supply 5% 100% 0% 100%

E1 Install Venting Systems 75

E2 Install Air Supply Systems 25

Line F Install and Service Gas Equipment 34% 80% 20% 100%

F1 Install and Service Burners 25

F2 Install and Service Appliances 35

F3 Perform Combustion Analysis 25

F4 Describe Heating and Cooling Systems 15

Line G Install and Service Controls and Safeguards 34% 80% 20% 100%

G1 Use the Principles of Electricity and Electronics 5

G2 Use the Principles of Gas Controls 10

G3 Install and Service Gas Controls 55

G4 Install and Service Fuel Train Systems 30

Total Percentage for Gasfitter A 100%

The composite level mark is to consist of 80% theory and 20% practical.

Program Content


Section 3

PROGRAM CONTENT

Gasfitter A

Program Content


Gasfitter A

Level 1

Program Content


Line (GAC): B USE TOOLS AND EQUIPMENT

Competency: B4 Use Pressure Measuring Equipment

Objectives

To be competent in this area, the individual must be able to:

Describe pressure measuring tools.

Use pressure measuring tools.

LEARNING TASKS CONTENT

1. Describe pressure measuring tools Review of manometers and mechanical gauges from level one Domestic/Commercial Gasfitter B

Add the following

o Manometers

Incline

Digital

o Mechanical gauges

Helical

2. Review the use of manometers and mechanical gauges

Gas pressures

o Standing line pressures

o Operating line pressures

o Gauge pressures

o Absolute pressures

o Conversion between different pressures

Program Content


Line (GAC): C ORGANIZE WORK

Competency: C1 Use Mathematics and Science

Objectives

To be competent in this area, the individual must be able to: Use mathematics and science to solve problems in the gas fitting trade.


1. Review Level 1 Gasfitter B Operations

Formulas

Conversions

Properties of matter

Pascal’s Law

Archimedes Principles

Mechanical advantage as it relates to pressure and force

Flow factors

Universal Gas Law

Thermal expansion

Heat transfer

Heat load calculations

Characteristics of hydrocarbon gases

Galvanic corrosion

2. Apply math formulas to gas fitting problems Roots

Powers

Transposition

3. Perform complex heat load calculations Factors

o Materials

o States of matter

o Temperature difference

o Rate

4. Describe the absorption refrigeration cycle Boiling point versus pressure

Latent heat

Sensible heat

Program Content


Line (GAC): C ORGANIZE WORK

Competency: C3 Use Codes, Regulations and Standards

Objectives


Identify codes and standards encountered in the gas fitting trade.

Identify various environmental agencies that affect the gas fitting trade.


1. Review Codes from Domestic/Commercial Gasfitter B

B149.1 Gas Code

Gas Regulations

Canadian Electrical Code Part 1

2. Interpret the B149.3 Gas Code Layout

Parts

o General Requirements

o Additional Requirements for Process Ovens, Furnaces and Atmosphere Generators

o Valve Train Schematics

o Start-up Procedures

Scope

Definitions

Contents

Tables

3. Use the Gas Regulations Gas Safety Act

Gas Safety Regulations

Permits

Special Gas Permits

Notification of completion

Approvals

Variations to the National Gas Code

Bulletins and Directives

Achievement Criteria

Performance The individual will use codes and standards in the application of shop projects.

Conditions The individual will be given:

Projects

Codes and standards

Criteria This would be reflected in the appropriate shop competencies.

Program Content


Line (GAC): D INSTALL AND SERVICE FUEL SYSTEMS

Competency: D2 Install Piping and Tubing Systems

Objectives


Select piping for gas appliances exceeding 400 MBH.

Size piping for gas appliances exceeding 400 MBH.

Install piping for gas appliances exceeding 400 MBH.


1. Review Codes from Domestic/Commercial Gasfitter B

Residential and commercial installations

Pipe sizing

Code requirements

Piping practices

2. Size piping Sizing calculations/formulas

Piping material

Code requirements

3. Install piping systems Code requirements

Support

Terminations

Fittings

Valves

Welded piping systems

o Testing

o Certification requirements

Underground

o Cathodic protection

o Jeep test

Expansion

Pressure drops/calculations

4. Pressure test piping systems Code requirements

Inspections

Equipment

Calculations

o Temperature

o Volume

o Pressure

Cylinder calculations

Program Content



Compressors

Gas law applications

5. Purge piping systems Code requirements

Equipment

Calculations

o Flow

o Velocity

o Volume

o Pressure

o Time

Purge point openings

Purging stacks

Inert gas


Performance The individual will pressure test and purge a piping system 4 inch or larger in size.


Piping system

Tools and equipment

Criteria The individual will score 70% or better on a rating sheet that reflects the following criteria:

Application of formulas

Sequence of operation

Program Content



Competency: D3 Use Meters

Objectives:


Describe the operation of gas meters.

Calculate flow rates.

Install gas meters.


1. Describe types of meters Positive displacement

Inferential meters

Capacity

2. Use meters Clocking

o Pressure

o Temperature

o Flow rate

Orifice flow calculations

3. Install meters Installation criteria

Manufacturers’ requirements

Applications

Program Content



Competency: D4 Install and Service Regulators

Objectives


Describe the installation requirements for gas pressure regulators.

Install and service gas pressure regulators.


1. Review direct operated regulators Types

Terminology

Operating elements

o Loading

o Measuring

o Restricting

Parts

Operating principles

Applications

Vent attachments

Sizing tables

o Flow rate

o Pressure drop

Maintenance

Troubleshoot

Freeze ups

2. Describe types of pressure regulators Types

o Pilot operated

o Direct operated

o Lever operated

o Single ported balanced

o Double ported balanced

o Zero governors

o Proportional

o Two-stage regulator system (propane)

Parts


Applications

Program Content



3. Describe methods of overpressure protection Code requirements

Applications

Relief

o Internal

o External

o Pop safety

o Modulating

o Capacity

o Termination

Safety shut-off

Monitor

Series regulation

4. Install pressure regulators Code requirements

Manufacturers’ specifications

Selection

Applications

By-pass arrangements

Venting

Commissioning

Test points

Orientation

Sensing lines

5. Troubleshoot and repair pressure regulators Applications

Operation

Pressure testing

Procedures for adjusting

Verification of correct operation of all safety features

Manufacturer’s recommendations

Code requirements

Location

Piping practices

Faults

o Obstructed vents

o Hunting

o Incorrect application/sizing

o Foreign material between seat and disc

o Corrosion

o Inlet pressure

Program Content



o Outlet gas pressure too high

o Outlet gas pressure to low

o Slow response

o Not maintaining set point

o Sensing lines

o Excessive droop

Repair and replacement

Lockout procedures

Safety


Performance The individual will troubleshoot a zero governor regulator installation.


Zero governor regulator connected to a:

o Nozzle mix burner

o Pre-mix burner

o Inserted faults

o Tools and equipment


Procedure

Correction

Safety

Program Content



Competency: D5 Install and Service Propane Systems

Objectives


Describe requirements for delivery and storage of propane gas.

Install and set-up systems used for the delivery of propane gas.


1. Review D5 Domestic/Commercial Gasfitter B Code requirements

Temperature effects on pressure

Filled capacity effect on vaporization rate

Cylinder/tank sizing

Describe cylinder/tank clearances from building

Installation procedures

Safety relief valves

Maintenance

Valves and accessories for vapour withdrawal applications

Valves and accessories for liquid applications

Valves and accessories for filling applications

Filling density at standard temperature

Filling capacity by mass

Vehicle impact protection

Vehicle access for filling storage tanks

Filling safety

Emergency procedures

2. Describe Code requirements for propane installations

Installer responsibility

Tank systems

Filling plants

Refill centres

Installation of tank systems

Liquid service

Program Content



3. Describe requirements for bulk storage facilities Bulk tanks

o Location on the property

o Site security

o Valves

o Accessories

o Routine maintenance

Filling

o Bulk tanks

o Pumps

o Meters

Liquefying procedures

4. Install LP vaporizers Code requirements

Types

o Direct fired

o Indirect fired

o Tank heaters

Sizing

o Applications

o Loads

Capacity

Location

Piping arrangements

Safety controls

Routine maintenance

5. Describe alternate fuels Types

Purpose

Multiple fuel mixtures

Fuel/air mixtures

Calculations

Equipment

Program Content


Line (GAC): E INSTALL VENTING AND AIR SUPPLY

Competency: E1 Install Venting Systems

Objectives


Describe the requirements for venting of appliances rated over 400 MBH.

Size and install venting for appliances rated over 400 MBH.


1. Review E1 of Domestic/Commercial Gasfitter B Gas appliance venting

Mechanical draft appliances

Venting systems for gas appliances

2. Describe draft Theory

Calculations

o Theoretical draft

o Height

o Temperature

o Volume

o Velocity

o Pressure

3. Install venting systems Code requirements

Engineered systems

Non-engineered systems

Sizing

Materials used

Barometric draft controls

Types

o Induced

o Forced

o Balanced

Heat reclaimers

Flue dampers

Program Content


Line (GAC): E INSTALL VENTING AND AIR SUPPLY

Competency: E2 Install Air Supply Systems

Objectives


Describe air supply requirements for appliances rated over 400 MBH.

Size and install air supplies for appliances rated over 400 MBH.


1. Review gas appliance air supply requirements Purpose

o Combustion air

Primary air

Secondary air

Excess air

o Dilution air

o Ventilation air

Building as a system

o Negative air pressure

Openings and ducts

o Terminations

2. Review the determination of combustion air requirements for gas appliances installations with a combined input of up to and including 400 MBH

Code requirements

Building envelope and construction

Category of the appliance

Draft control

Air requirement calculations

o Combustion

o Ventilation

o Flue gas dilution

Table selection

Grills and louvers

o Types

o Sizing

o Free area calculations

Air ducts

o Length

o Size

Program Content



3. Review the determination of combustion air requirements for gas appliance installations with a combined input exceeding 400 MBH

Code requirements

Dilution air requirements

Air requirement calculations

o Combustion

o Ventilation

o Flue gas dilution

Calculations

Grills and louvers

o Types

o Sizing

o Free area calculations

Air ducts

o Length

o Size

4. Review the installation of air supply Code requirements

Structural penetrations

Sealing

Openings and ducts

o Terminations

Wind conditions

Length

Supply by mechanical means

5. Describe mechanical air supply Code requirements

Fan capacity

Calculations

Interlocks

Program Content


Line (GAC): F INSTALL AND SERVICE GAS EQUIPMENT

Competency: F1 Install and Service Burners

Objectives


Describe installation requirements for burners installed in commercial/industrial appliances.

Install and commission burners on commercial/industrial appliances.


1. Review F1 Domestic/Commercial Gasfitter B Combustion requirements

Atmospheric burners

Mechanical burners

Burner orifices

Burner adjustment

Pilot installation

2. Describe commercial/industrial gas burners Design

o Low pressure, natural draft

o Low pressure, forced draft

o Induced draft

o High pressure natural draft

o Mechanical burners

Parts

Operation

Types

o Atmospheric

o Mechanical-draft

o Small port type (manifold)

o Large port burner (pressure)

o Tile-port burner (radiant)

o Premix

o Aspirator

o Fan mix

o Nozzle mixing

o Excess air burner

o Blast burner

o Conversion burners

o Immersion tube

Applications

Flame characteristics

Code requirements


Program Content



3. Commission commercial/industrial gas burners Fuel flow

Air flow

Draft

Flue gas recirculation

Turn down ratio

Code requirements

Start up procedures


Mounting details

Flame characteristics and adjustment procedures

Maintenance procedures

Gas valve tightness testing

Fuel conversions

Troubleshooting

o Burner pulsations

o Limits and safeties

o Stack temperatures

Program Content



Competency: F2 Install and Service Appliances

Objectives


Describe installation requirements for commercial/industrial gas fired appliances.

Install and adjust commercial/industrial gas fired appliances.


1. Review F2 of Domestic/Commercial Gasfitter B Types

Characteristics

Applications

Installation requirements

Commissioning

Code requirements

2. Describe commercial/industrial appliance installation

Types

o Air wall

o Boilers/gas fired hot water boosters

o Commercial cooking equipment

o Commercial clothes dryers

o Industrial dryers

o Construction heaters

o Catalytic heaters

o Carbon dioxide generators

o Domestic service water heaters

o Direct fired make-up air units

o Indirect fired make-up air heaters

o Incinerators

o Industrial appliances

o Pressure boosters

o Roof-top units

o Stationary gas engines

Code requirements

Safety precautions

Approval agencies

Altitude rating requirements

Site preparation

Installation procedures

Venting requirements

Air supply requirements

Program Content



3. Commission commercial/industrial appliances Types

Code requirements

Inspections

Boiler overview

o Types

o Ratings

o Start-up procedures

Direct fired make-up unit overview and start-up procedures

o Velocity/volume calculations

o Profile opening

o Temperature rise

o Static pressure

o Interlocks

Other appliance start-up procedures

Burner set-up

o Manifold pressure testing and adjustment

o Meter clocking and gas consumption

o Combustion gas analysis

o Efficiencies

o Pilot turndown test

Customer operating instructions

Installers responsibility

Routine maintenance

Testing and setting of operating controls, safety controls and interlocks

Describe common troubleshooting techniques


Performance The individual will commission an industrial boiler and direct fired make-up air unit.


Industrial boiler

Direct fired make-up air unit

Tools and equipment



To code

To manufacturers’ specifications

Combustion analysis

Program Content



Competency: F3 Perform Combustion Analysis

Objectives


Describe the combustion process in burners installed in commercial/industrial appliances.

Describe the combustion analysis process for commercial/industrial gas fired appliances.

Perform combustion analysis and adjust equipment for maximum efficiency.


1. Review F3 of Domestic/Commercial Gasfitter B Chemical process of combustion

Combustion analysis for appliances up to and including 400 MBH

2. Describe combustion in commercial/industrial gas burners

Terms

Primary and secondary air supply

Introduction and control of combustion air

Calculation and combustion air requirements

Products of complete combustion

Dangers of accumulation of products of combustion

o NOx

o SOx

o CO2

o CO

Products of incomplete combustion

Multi-fuel applications

Volumes of air for various proportions of excess air in the combustion chamber

Code requirements

Environmental requirements

Flue gas recirculation

Program Content



3. Perform combustion analysis Percentage of carbon dioxide in the flue gas

Flue gas temperature

Calculation of excess air flowing through the combustion chamber

Appliance efficiency

Oxygen in the vent

Plotting combustion efficiency

Troubleshoot

Corrective measures to achieve maximum efficiency

Program Content



Competency: F4 Describe Heating and Cooling Systems

Objectives


Describe safety procedures when working around gas fired heating/cooling units.

Describe the parts and operation of gas fired heating/cooling units.


1. Describe principles of refrigeration and cooling Sensible heat

Latent heat

Absorption

Pressures

Refrigerants

2. Describe types of gas fired air conditioning equipment

Gas fired absorption systems

o Ammonia-water

o Water-lithium bromide systems

Gas fired absorption chiller/heat units

o Chilling cycle

o Heating cycle

Operation and installation considerations


3. Describe safety procedures when working around gas fired heating/cooling units

Hazard recognition

OHS Regulations

Handling of refrigerants

Safety practices

Program Content


Line (GAC): G INSTALL AND SERVICE CONTROLS AND SAFEGUARDS

Competency: G1 Use the Principles of Electricity and Electronics

Objectives


Locate and apply Canadian Electrical Code rules pertaining to the installation electrical equipment on gas fired appliances.

Install and wire single/three phase motors.


1. Review G1 of Domestic/Commercial Gasfitter B Describe principles of electricity

Describe principles of magnetism and magnetic induction

2. Describe Canadian Electrical Code Requirements

Review C3 of Domestic/Commercial Gasfitter B

Three phase motors

o Section 28

3. Describe electrical terminology Voltage

Lock-out procedures

Motor terminology

Nameplate data

Single-phase motors

o Types

Split phase induction motor

Resistance start motor

Capacitor start motor

Permanent-split capacitor motor

Shaded pole induction motor

Dual voltage

o Operation

o Wiring

o Control

o Protection

Overload

Overcurrent

Three-phase motors

o Types

Squirrel cage induction motors

Multispeed motors

Dual voltage

o Operation

o Wiring

Program Content



o Control

o Protection

Overload

Overcurrent

Direct current motors

Effects of loading

Maintenance

Troubleshooting

5. Maintain motors Inspect

Troubleshoot

Program Content



Competency: G2 Use the Principles of Gas Controls

Objectives


Apply applications of control systems.


1. Describe power and control circuits found on commercial/industrial gas fired equipment

Terminology

Diagrams

o One-line

o Schematic

o Ladder

o Wiring

o Symbols

o Timing

o Sequencing

Electronic controllers

o Types

o Operations

o Applications

Wheatstone bridge

Flame safeguards

Supervisory systems

Programmable Logic Controllers (PLCs)

Pre-Programmable Logic Controllers

Building management systems

Ignition

Lead lag

2. Describe commercial/industrial electro/mechanical controls

Pressure controls

Temperature controls

Fluid controls

Combustion controls

Proportional controls

Supervisory systems

End switches and interlocks

Identification

Operation

Ratings

Program Content



3. Describe flame safeguard controls Purpose

Flame characteristics

o Spectrum

o Flame ionization

o Flame rectification

o Flame flicker

Flame detector types

Flame safeguard terminology

Programmed controls and Interlocks terminology


Operating sequence

Parts

Code requirements

Safety

4. Apply applications of control systems Code requirements

Applications

Interfaces

Location

Wiring requirements

Program Content



Competency: G3 Install and Service Gas Controls

Objectives


Describe the installation requirements for controls used on commercial/industrial gas fired appliances.

Install and adjust controls used on commercial/industrial gas fired appliances.

Install a flame safeguard and supervisory system on a commercial/industrial gas fired appliance.


1. Install control systems for commercial/industrial appliances

Supervisory systems

Pneumatic systems

Multi-stage systems

Modulating control systems

Programming control systems

Programmable control systems

On/off application

Dual fuel systems

Motor controls

Electrical diagrams


Maintenance

Troubleshooting

Safety

2. Install and service flame safeguards Flame detectors

o Types

o Sighting location

o Application

o Temperature

o Positioning

Programmed controls and interlocks

Operating sequence

Parts

Wiring practices

Commissioning

Manufacturer’s specifications

Code requirements

Troubleshooting

Maintenance

Safety

Program Content



Performance The individual will install a flame safeguard and supervisory system on a commercial/industrial gas appliance.


Appliance

Flame safeguard

Supervisory system components

Tools and equipment


Code

Safety

Verification of installation

Program Content



Competency: G4 Install and Service Fuel Train Systems

Objectives


Describe fuel train systems for inputs exceeding 400 MBH.

Install and service fuel train systems for inputs exceeding 400 MBH.


1. Describe fuel train components Code requirements

Certification

Types

Purpose

Component parts

Component operation

2. Describe fuel train operation Code requirements

Components of specific fuel trains


3. Describe flow controllers Ratio regulators

Ratio controllers

Limiting orifices

Metering orifices

4. Install and service fuel train systems Code requirements

Inspections

Certification

Installation requirements


Testing

Interlocking

Commissioning

Program Content



Performance The individual will commission and troubleshoot fuel trains.


Fuel train meeting code requirements of valve train diagrams of the B149.3

Tools and equipment


Meets Code requirements

Procedure

Fault corrected and verified

Safety

Section 4


Section 4

TRAINING PROVIDER STANDARDS

Section 4


Facility Requirements

Classroom Area

Minimum 22 square feet per student

Comfortable seating and tables suitable for learning

Compliance with the local and national fire code and occupational safety requirements

Meets applicable municipal zoning bylaws for technical instruction and education facilities

Overhead and multimedia projectors with a projection screen

Whiteboard with marking pens and erasers

Lighting controls to allow easy visibility of the projection screen while allowing students to take notes

Windows must have shades or blinds to adjust sunlight

Heating/Air conditioning for comfort all year round

The acoustics in the room must allow the students to be able to hear the instructor

Shop Area

Minimum 3000 square feet of shop area including a tool crib and work stations

Minimum 10 foot ceiling height in shop areas

Minimum 8 foot ceiling in lab areas

Adequate heating, lighting, ventilation (including make up air), drainage and water supply

Refuse and recycling bins for used shop materials

First-aid equipment

Shops will support practical requirements as outlined in the program outline

Shop facilities will support gas fitting practical training

Lab Requirements

N/A

Student Facilities

Adequate eating area as per WorkSafeBC requirements (4.84 OHS Regulation and Guidelines)

Adequate washroom facilities as per WorkSafeBC requirements (4.84 OHS Regulation and Guidelines)

Instructor’s Office Space

Adequate office space for student consultation

Desk and filing space

Computer

Internet access

Printer

Adequate storage facilities for material and training aids

Access to photocopier

Telephone

Section 4


Tools and Equipment

Required Shop (Facility) Tools

Power Tools Air compressor and accessories Portable band saw (hack saw) Band saw Powder-actuated tools Bench grinder Power drills Chop saw Power hole saw Circular saw Power threading machine Cordless drills Reciprocating saw Drill press Rotary hammer Mini grinder Task lighting equipment

Cutting and Joining Equipment

Half round file Pipe stand Flaring tools Pipe threader Hand operated oiler Pipe vise Oxy-acetylene equipment Power vise Pipe cutter Tube bender Pipe reamer Tube cutter Pipe roller

Testing and Measuring Equipment

Nitrogen bottles and regulators Hand pump and accessories Compressor Computer

Hydrostatic pump and gauge (manual and power)

Drafting equipment Laser level Electronic Flue gas analyzer Manometers Electronic leak detector Measuring tape and markers Draft gauge Multimeter Scale ruler

Hoisting, Rigging and Access Tools and Equipment

Come-a-longs and Tirfors Shackles Ladders Slings and chokers Lifting eyes Snatch blocks Rope/cable

Section 4


Personal Protective and Safety Equipment Eye wash kit Hearing protection Face shield Lock-out devices Fire blanket Overalls Fire extinguisher Rubber boots First aid kit Dust mask Gloves (industrial rubber) Safety glasses/goggles Hard hat Safety harness, lanyard and life line

Standard Tools

Adjustable wrench Plumb bob Ball-peen hammer Pry bars Broom Punch Caulking gun Ratchet Chalk line Rubber mallet Chisels Scratch awl Claw hammer Screwdrivers (complete set) Combination wrench Shovel Drywall saw Sledgehammer Files Socket set (imperial and metric) Flashlight Square Hacksaw Striker Hand saw T square Hex Keys (set) Tap and die sets Hole saw Threading hand dies Knife Tin snips (set) Levels Torque wrench Pick Tri-square Pipe wrench Utility brushes Pin vice Wire brushes Pliers (lineman, needle nose, water pump, channel lock)

Orifice drills

Student Tools (supplied by student)

Calculator

Safety boots

Section 4


Reference Materials

Required Reference Materials

N/A

Recommended Resources

CAN/ CSA B149.1 current



CAN/ CSA C22.1 current

Suggested Texts

N/A

NOTE:

This list of Reference Materials is for training providers. Apprentices should contact their preferred training provider for a list of recommended or required texts for this program.

Section 4


Instructor Requirements

Occupation Qualification

The instructor must possess one of the following:

Current BC Certificate of Competency/Qualification in Gasfitting

Certificate must be equal or greater than the level of instruction

Work Experience

A minimum of 5 years’ experience working in the industry as a Class A Gasfitter. This experience requirement may be varied based on:

Type of experience and scope of exposure to the industry

Other related credentials

Specialized experience

Instructional Experience and Education

It is preferred that the instructor be working towards one or more of the following:

Instructor Diploma or equivalent

Bachelor’s Degree in Education

Master’s Degree in Education

Documents

Gasfitter A - ITA BC · Gasfitter A Industry Training Authority 2 Foreword The revised Gasfitter A Program Outline is intended as a guide for instructors, apprentices, and employers